Source : Webster's Revised Unabridged Dictionary (1913)

Blare \Blare\, v. i. [imp. & p. p. {Blared}; p. pr. & vb. n.
   {Blaring}.] [OE. blaren, bloren, to cry, woop; cf. G.
   pl["a]rren to bleat, D. blaren to bleat, cry, weep. Prob. an
   imitative word, but cf. also E. blast. Cf. {Blore}.]
   To sound loudly and somewhat harshly. ``The trumpet blared.''
   --Tennyson.

Source : WordNet®

blaring
     adj : unpleasantly loud and penetrating; "the blaring noise of
           trumpets"; "shut our ears against the blasting music
           from his car radio" [syn: {blasting}]
     n : a loud harsh or strident noise [syn: {blare}, {cacophony}, {clamor},
          {din}]